sfdaytona
Member
So over the weekend I was about to tackle the trans service/pan change but decided to go another route (I've read about everything on here related to this but think I have a slightly different issue here). A good friend was kind enough to loan his shop/lift for me to use. We start assessing the removal of everything (He's a master BMW tech and is familiar with the ZF's in our LR4s) and he advised the time to do everything would take more than we had available. Many of you have stated these things require two drain and fills to get the majority of the old fluid out. So, in the interest of time and knowing I'm going to do the bridge seals and metal pan later, I opted to just do a drain/fill (using the recommended ZF lifeguard 6 Fluid). Caveat: My LR4 is a 2011, 117k miles and I have no known history of a trans service ever being performed. Also, the mechatronics sleeve and OE plastic pan are bone dry.
Prior to my fluid change I noticed two things with this thing:
1) Under any type of load or on flat/level roads, a downshift would cause a very obvious driveline shuddering that would kind of fade out if you reduced throttle input. Not easy to replicate but it would do it often enough to be annoying.
2) Steady speed cruise, the rpms would fluctuate by about 100 rpm (and it would be a constant up/down fluctuation).
There are no stored faults in the trans.
Post Trans fluid change: Shuddering is gone and now the rpm fluctuation is about 50rpms. (Shifting is significantly smoother...you almost don't feel it shift at all). Also I didn't reset trans adaptations.
This is probably a case of needing the bridge seals and one more fluid change (again, once I do the pan swap), but I'm wondering if I am at the beginnings of needing a torque converter.
Just wanted to post up an experience incase anyone has had similar issues and was curious what a basic fluid change would do.
Nick
Prior to my fluid change I noticed two things with this thing:
1) Under any type of load or on flat/level roads, a downshift would cause a very obvious driveline shuddering that would kind of fade out if you reduced throttle input. Not easy to replicate but it would do it often enough to be annoying.
2) Steady speed cruise, the rpms would fluctuate by about 100 rpm (and it would be a constant up/down fluctuation).
There are no stored faults in the trans.
Post Trans fluid change: Shuddering is gone and now the rpm fluctuation is about 50rpms. (Shifting is significantly smoother...you almost don't feel it shift at all). Also I didn't reset trans adaptations.
This is probably a case of needing the bridge seals and one more fluid change (again, once I do the pan swap), but I'm wondering if I am at the beginnings of needing a torque converter.
Just wanted to post up an experience incase anyone has had similar issues and was curious what a basic fluid change would do.
Nick